Large water beam with long service life for iron ore pellet shaft furnace

Abstract

The large water beam of the iron ore pellet shaft furnace is long in service life and comprises a main body, the left side and the right side of the main body are respectively provided with a group of cold water pipes, and the opposite faces of each group of cold water pipes are communicated with a plurality of cross beam pipes. According to the utility model, the mounting seat is screwed at the air guide port of the main body of the large water beam of the shaft furnace, the plurality of unit bushings corresponding to the air guide port at the top of the main body are arranged on the mounting seat side by side, and the rectangular refractory bricks are stacked and built in the mounting groove formed in the inner wall surface of each unit bushing by adopting the refractory binder; the alloy lining plate is arranged on the inner wall of the main body corresponding to the cross beam pipe, a plurality of connecting strips are integrally formed on the face, facing the cross beam pipe, of the alloy lining plate, the connecting strips are connected with a plurality of connecting grooves formed in the inner wall of the main body through fire-resistant binders, and the mounting seats mounted through bolts are combined. And erosive wear caused by rebound in the pellet large water beam is eliminated, and meanwhile, the mounting seat and the alloy lining plate can be detached and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of large water beams for vertical furnaces, in particular to a large water beam for vertical furnaces for iron ore pelletizing with a long service life. Background Art

[0002] In the existing mechanical vertical furnace used for iron ore pellet production, the beam supporting the wind guide wall (also called the large water beam) is welded by seamless cross beam tubes densely arranged on both sides to form a frame. Cooling water is passed through the cross beam tubes to achieve circulating cooling. The cross beam tubes on both sides are connected by steel plates. The beam is suspended in the air and cross-armed at both ends of the furnace wall of the vertical furnace.

[0003] The beam and the wind guide wall it supports play a ventilation role in the vertical furnace. When the large particles of dust and ball ore slag carried by the airflow pass through the ventilation holes of the wind guide wall, they cannot be taken out of the wind guide wall by the airflow due to their large particle size and mass. Under the dual effects of their own weight and upward airflow, they are suspended in the lower part of the beam and the wind guide wall. Since the ventilation holes of the beam and the wind guide wall are rectangular, the large particles are subjected to wandering friction with the welding points of the water pipe and the rib plate under the action of centrifugal force, producing the same effect as rust removal and sand flushing of metal pipes, until the particles are ground and the thrust of the airflow is greater than the gravity of the particles themselves, and then they are gradually taken out of the furnace. This cycle repeats itself until it is damaged and can no longer be used. The beam partitions are washed away first due to the lack of water for cooling, and other parts also develop fatigue cracks due to being worn thin or through or under the continuous vibration of air stagnation. Under the action of water vapor pressure, the crossbeam tubes crack, leak or deform. The general service life is 6 months or can be repaired at any time to about 1 year. Its service life and replacement time cannot be synchronized with the air guide wall tiles, because the replacement process of the beam also requires the removal of the air guide wall tiles that can still be used. Therefore, this results in the short life of the beam, which seriously affects production and increases production costs.

[0004] In the prior art, the protection measure for the large water beam of the vertical furnace is often to add an alloy lining plate at the cross beam pipe (for example: publication number CN206399200U). Although this method provides a layer of protection structure for the cross beam pipe, as the ball ore slag is worn away, the alloy lining plate still needs to be maintained regularly, and the alloy lining plate is inconvenient to load and unload, which has an adverse effect on subsequent maintenance.

[0005] To this end, a large water beam for an iron ore pelletizing vertical furnace with a long service life is proposed, which has the advantage of extending the service life and thus solves the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a large water beam for an iron ore pelletizing vertical furnace with a long service life.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a large water beam of an iron ore pelletizing vertical furnace with a long service life, comprising a main body, a group of cold water pipes are arranged on the left and right sides of the main body respectively, and a plurality of cross beam pipes are connected to the facing side of each group of cold water pipes, and the plurality of cross beam pipes are buried and installed in the main body, the internal cavity of the main body forms an air guide port, and the inner wall surface of the air guide port is provided with a plurality of connecting grooves, and the inner wall surface of the air guide port is fitted with an alloy lining plate, and the surface of the alloy lining plate is integrally cast with a plurality of connecting strips corresponding to the connecting grooves, and the plurality of connecting strips extend into the plurality of connecting grooves respectively, and refractory adhesive is filled between the plurality of connecting strips and the plurality of connecting grooves, a mounting seat is fixedly installed on the top of the main body by bolts, and a plurality of unit bushings are arranged on the top of the mounting seat, and each unit bushing is connected to the air guide port of the main body, a plurality of mounting grooves are provided on the inner wall surfaces of the plurality of unit bushings, and a plurality of rectangular refractory bricks are laid and installed in the mounting grooves.

[0008] As a further description of the above technical solution: a plurality of mounting holes are opened around the bottom of the mounting seat, and each mounting hole is fixedly connected to the top of the main body by bolts.

[0009] As a further description of the above technical solution: the height of the alloy lining plate is matched with the height of the main body, and a smooth surface is provided on the side of the alloy lining plate facing away from the connecting strip.

[0010] As a further description of the above technical solution: the rectangular refractory bricks are overall in a rectangular frame structure, and the size of the rectangular refractory bricks is compatible with the internal space of the installation groove.

[0011] As a further description of the above technical solution: alloy linings are bonded to multiple surfaces of the air guide port of the main body, and the alloy linings inside the main body are arranged in a rectangular structure.

[0012] As a further description of the above technical solution: a group of cold water pipes on the left side of the main body is a water inlet end, and a group of cold water pipes on the right side of the main body is a water outlet end.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, a mounting seat is screwed at the air guide port of the main body of the vertical furnace water beam, and a plurality of unit bushings are arranged side by side on the mounting seat corresponding to the air guide port on the top of the main body, and rectangular refractory bricks are stacked and laid with a refractory adhesive in a mounting groove provided on the inner wall surface of each unit bushing, which is easy to load and unload while assuming the function of an air guide wall, and an alloy lining plate is provided on the inner wall of the main body corresponding to the cross beam tube, and a plurality of connecting strips are integrally formed on the side of the alloy lining plate facing the cross beam tube, and are connected to a plurality of connecting grooves provided on the inner wall of the main body with a refractory adhesive, and combined with a mounting seat installed with bolts, the scouring and wear caused by rebound in the pelletizing water beam can be eliminated, and at the same time, the mounting seat and the alloy lining plate can be disassembled and replaced, which provides convenience for the maintenance of the vertical furnace water beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a large water beam of an iron ore pelletizing vertical furnace with a long service life according to the utility model;

[0016] Figure 2 It is a side cross-sectional view of a large water beam of an iron ore pelletizing vertical furnace with a long service life according to the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the structure of a mounting seat for a large water beam of an iron ore pelletizing vertical furnace with a long service life.

[0018] Legend:

[0019] 1. Main body; 2. Mounting seat; 3. Unit bushing; 4. Cold water pipe; 5. Crossbeam pipe; 6. Mounting groove; 7. Rectangular refractory brick; 8. Alloy lining plate; 9. Connecting strip; 10. Connecting groove; 11. Mounting hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] According to an embodiment of the utility model, a large water beam of an iron ore pelletizing vertical furnace with a long service life is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, according to an embodiment of the utility model, a large water beam of an iron ore pelletizing vertical furnace with a long service life includes a main body 1, a group of cold water pipes 4 are arranged on the left and right sides of the main body 1, and a plurality of cross beam pipes 5 are connected to the opposite sides of each group of cold water pipes 4, and the plurality of cross beam pipes 5 are buried and installed in the main body 1, the internal cavity of the main body 1 forms an air guide port, and the inner wall surface of the air guide port is provided with a plurality of connecting grooves 10, and the inner wall surface of the air guide port is attached with an alloy lining plate 8, and the surface of the alloy lining plate 8 corresponds to the connecting groove 10 and is integrally cast with a plurality of connecting strips 9, and the plurality of connecting strips 9 extend into the plurality of connecting grooves 10 respectively. , and a refractory adhesive is filled between several connecting strips 9 and several connecting grooves 10, a mounting seat 2 is fixedly installed on the top of the main body 1 by bolts, and several unit bushings 3 are arranged on the top of the mounting seat 2, and each unit bushing 3 is connected to the air guide port of the main body 1, and several unit bushings 3 are provided with mounting grooves 6 on the inner wall surface, and several rectangular refractory bricks 7 are installed in the mounting grooves 6. In order to extend the life of the device, the unit bushings 3 are made of ceramic insulation materials, and the mounting seat 2 is cast by conventional steel. The parts not involved in the device are the same as the prior art or can be implemented by the prior art;

[0023] In one embodiment, a plurality of mounting holes 11 are opened around the bottom of the mounting seat 2, and each mounting hole 11 is fixedly connected to the top of the main body 1 by bolts, so that the mounting seat 2 can be fixed by providing a plurality of mounting holes 11.

[0024] In one embodiment, the height of the alloy lining plate 8 matches the height of the main body 1 , and a smooth surface is provided on the side of the alloy lining plate 8 facing away from the connecting strip 9 , so that erosion and wear are reduced by the smooth surface of the alloy lining plate 8 .

[0025] In one embodiment, the rectangular refractory brick 7 is a rectangular frame structure as a whole, and the size of the rectangular refractory brick 7 is adapted to the inner space of the installation groove 6, so that the rectangular refractory brick 7 can directly contact the hot air and particulate impurities passing through the unit liner 3.

[0026] In one embodiment, alloy lining plates 8 are attached to multiple surfaces of the air guide port of the main body 1, and the alloy lining plates 8 inside the main body 1 are arranged in a rectangular structure, that is, the alloy lining plates 8 fully cover the inner wall surface of the air guide port of the main body 1, providing protection for the inner wall of the main body 1.

[0027] In one embodiment, a group of cold water pipes 4 on the left side of the main body 1 is a water inlet end, and a group of cold water pipes 4 on the right side of the main body 1 is a water outlet end. The water inlet end and the water outlet end are arranged to facilitate the circulation of cold water.

[0028] Working principle:

[0029] When in use, the alloy lining 8 is attached to the inner wall surface of the main body 1, and a refractory adhesive is filled between several connecting strips 9 arranged on one side of the alloy lining 8 facing the crossbeam tube 5 and several connecting grooves 10 opened on the inner wall of the main body 1. Then the mounting seat 2 is fixedly installed at the air inlet of the main body 1 of the vertical furnace water beam by bolts, and the air inlet on the top of the main body 1 is kept in communication with several unit bushings 3 on the mounting seat 2. Since rectangular refractory bricks 7 are stacked and laid with refractory adhesive in the mounting groove 6 opened on the inner wall surface of each unit bushing 3, it is easy to load and unload while assuming the function of an air guide wall. When the alloy lining 8 needs to be replaced, the bolts on the mounting seat 2 are unlocked, the mounting seat 2 is separated from the air inlet of the main body 1, and then the alloy lining 8 attached to the inner wall of the main body 1 is removed and replaced. While eliminating the scouring and wear caused by the rebound in the pelletizing water beam, the mounting seat 2 and the alloy lining 8 can be disassembled and replaced, which provides convenience for the maintenance of the vertical furnace water beam.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large water beam for an iron ore pelletizing shaft furnace with a long service life, comprising a main body (1), characterized in that: A group of cold water pipes (4) are arranged on the left and right sides of the main body (1), and the facing side of each group of cold water pipes (4) is connected to a plurality of cross beam pipes (5), and the plurality of cross beam pipes (5) are all buried and installed in the main body (1). The internal cavity of the main body (1) forms an air guide port, and the inner wall surface of the air guide port is provided with a plurality of connecting grooves (10), and the inner wall surface of the air guide port is attached with an alloy lining plate (8), and the surface of the alloy lining plate (8) is integrally cast with a plurality of connecting strips (9) corresponding to the connecting grooves (10), and the plurality of connecting strips (9) extend into a plurality of connection grooves (10), and a refractory adhesive is filled between the plurality of connection strips (9) and the plurality of connection grooves (10). A mounting seat (2) is fixedly mounted on the top of the main body (1) by bolts, and a plurality of unit bushings (3) are arranged on the top of the mounting seat (2), and each unit bushing (3) is connected to the air guide port of the main body (1). A plurality of installation grooves (6) are opened on the inner wall surfaces of the plurality of unit bushings (3), and a plurality of rectangular refractory bricks (7) are installed in the installation grooves (6).

2. The large water beam for an iron ore pelletizing vertical furnace with a long service life according to claim 1, characterized in that: A plurality of mounting holes (11) are provided around the bottom of the mounting seat (2), and each mounting hole (11) is fixedly connected to the top of the main body (1) via bolts.

3. The large water beam for an iron ore pelletizing vertical furnace with a long service life according to claim 1, characterized in that: The height of the alloy lining plate (8) is matched with the height of the main body (1), and a smooth surface is provided on a side of the alloy lining plate (8) facing away from the connecting strip (9).

4. The large water beam for an iron ore pelletizing vertical furnace with a long service life according to claim 1, characterized in that: The rectangular refractory brick (7) is a rectangular frame structure as a whole, and the size of the rectangular refractory brick (7) is compatible with the internal space of the installation groove (6).

5. The large water beam for an iron ore pelletizing vertical furnace with a long service life according to claim 1, characterized in that: Alloy lining plates (8) are attached to multiple surfaces of the air guide port of the main body (1), and the alloy lining plates (8) inside the main body (1) are arranged in a rectangular structure.

6. The large water beam for the iron ore pelletizing vertical furnace with a long service life according to claim 1, characterized in that: A group of cold water pipes (4) on the left side of the main body (1) is a water inlet end, and a group of cold water pipes (4) on the right side of the main body (1) is a water outlet end.

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